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Acams CCAS Exam - Topic 1 Question 4 Discussion

Actual exam question for Acams's CCAS exam

Question #: 4
Topic #: 1

[All CCAS Questions]

Which advantage of the proof of work consensus algorithm is widely applicable in many cryptocurrencies and other blockchain systems?

ADependency on electricity

BCentralization of the consensus mechanism

CVerification of transactions by solving complex mathematical puzzles

DSecurity of small networks

Show Suggested Answer

Suggested Answer: C

Proof of Work (PoW) consensus achieves network consensus by requiring participants (miners) to solve complex cryptographic puzzles, which verifies transactions and secures the blockchain. This computational work makes it difficult and costly to alter the blockchain.

Dependency on electricity (A) is a criticism rather than an advantage. PoW promotes decentralization rather than centralization (B). It provides strong security for large networks rather than small ones (D).

This principle is fundamental in Bitcoin and many other cryptocurrencies and is frequently referenced in AML/CFT guidance to understand the transaction validation process and network security.

by Florinda at Aug 13, 2025, 02:04 AM

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Wei

9 months ago

Wait, does solving puzzles really make it more secure?

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Simona

9 months ago

I think A is a big issue, not an advantage.

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Kenneth

9 months ago

C makes sense, it’s how Bitcoin works!

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Lenny

10 months ago

Not sure if C is as great as people say...

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Leonor

10 months ago

C is definitely the right answer!

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Shizue

10 months ago

I’m leaning towards option C as well, since it seems to be a common theme in many cryptocurrencies, but I wonder if there are other factors at play.

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Rory

10 months ago

I feel like the dependency on electricity is more of a drawback than an advantage, so that can't be the right answer.

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Nilsa

11 months ago

I remember practicing a question about the benefits of proof of work, and I think it had something to do with security, but I can't recall the specifics.

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Devorah

11 months ago

I think the verification of transactions by solving complex mathematical puzzles is a key advantage, but I’m not entirely sure if it's the most widely applicable one.

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Ressie

11 months ago

I'm a bit confused by this question. The options don't seem to directly address the advantages of proof of work. I'll have to review my notes to make sure I understand this concept properly.

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Carmen

11 months ago

Okay, I know proof of work is used to validate transactions in many cryptocurrencies, so I'm going to go with C. The complex puzzles help secure the network.

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Dell

11 months ago

Hmm, I'm not sure about this one. The options don't seem to clearly match the question about the advantages of proof of work. I'll have to think this through carefully.

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Vallie

11 months ago

This question seems straightforward, I think the answer is C - verification of transactions by solving complex mathematical puzzles.

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Sherly

12 months ago

I believe that option A) Dependency on electricity is also a key advantage as it helps to prevent centralization and control by a single entity.

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Delila

1 year ago

I agree with Jacquline. The verification of transactions through solving puzzles ensures security and trust in the network.

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Jacquline

1 year ago

I think the advantage of the proof of work consensus algorithm that is widely applicable is C) Verification of transactions by solving complex mathematical puzzles.

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